The Billboard Hot 100 is a chart that ranks the best-performing singles of the United States. At the end of a year, Billboard publishes an annual list of the 100 most successful songs. The 2015 songs list was published on December 9.
The track Uptown Funk by British producer Mark Ronson, featuring American singer Bruno Mars, was named the number 1 song of 2015. It spent the longest time at number 1 for the year: 14 weeks.
Katy Perry performed at the halftime show during Super Bowl XLIX on February 1, making it the most watched, most rated, and most tweeted per second halftime show.
The 57th Grammy Awards took place at the Staples Center in Los Angeles. British singer Sam Smith won the most awards with four including: Record of the Year, Song of the Year, Best Pop Vocal Album, and Best New Artist. Beck's Morning Phase won Album of the Year.
The music video for "Dark Horse" by Katy Perry reached 1 billion views on Vevo, making it the first music video by a female artist to do so and the third music video overall to do so. It was the third most-viewed YouTube video of all time, and the most-watched video by a female artist until "Blank Space" by Taylor Swift took both records a month later.
The 2015 MTV Video Music Awards were held at the Microsoft Theater at L.A. Live in Los Angeles. Taylor Swift was the big winner of the night with four awards, including Video of the Year for "Bad Blood".
The music video for Adele's "Hello" broke the Vevo Record for the most views within a 24-hour span with 27.7 million views, beating out the previous record held by Taylor Swift's "Bad Blood". It also broke the record for shortest time to attain 100 million Vevo views, previously held by Miley Cyrus' "Wrecking Ball"
Former Stone Temple Pilots & Velvet Revolver singer Scott Weiland is found dead on his tour bus at the age of 48.